Most recently, Delta said it received 150,000 applications during 2016 for about 1,200 attendant positions filled this year. The Atlanta-based airline said it conducted 35,000 video interviews and 6,000 in-person interviews to fill those spots. So far for 2018, Delta has received more than 125,000 applications, spokeswoman Ashton Morrow said to Today in the Sky.

"Earning and wearing the wings of Delta is something our flight attendants are proud of and passionate about, as they should be," Allison Ausband, Delta's SVP – In-Flight Service, said in a statement. "After making it through the highly competitive and exhaustive selection process, they put all their previous experience and skills to the test during our flight attendant initial training.”

Delta said applicants must have a high school degree or GED, the ability to work in the U.S., English fluency and be at least 21 years of age by Jan. 1, 2018.

To help promote its openings for next year, Delta is taking to social media. It's launching a "mini-series" called "Earning our Wings" that will help give interested applicants "a better understanding of just what it takes" to become a Delta attendant.

For the next 10 weeks, Delta will post a new episode each Monday and Thursday to both its YouTube and its media sites. The series, in Delta's words, follows the "journey of five new hires as they make their way through the eight-week training program each new flight attendant must complete at Delta's Atlanta headquarters."

A control pane for Delta's Premium Select international-style premium economy seats is seen during a media demonstration flight over the U.S. Southeast on Tuesday, Oct. 17, 2017. Daryl Bjoraas, Gannett

As with Boeing's 787, larger-than-normal windows are a hallmark of Airbus' A350 model. Seen here is the pre-takeoff view from a Delta demonstration flight on the A350 on Oct. 17, 2017. Ben Mutzabaugh, USA TODAY